MRC Clinical Sciences Centre;
Faculty of Medicine;
Imperial College;
Hammersmith Hospital Campus;
London W12 0NN;
United Kingdom;
Livestock Laboratory;
Regional Government of álava;
01520 Vitoria-Gasteiz;
Spain;
National Centre of Epidemiology CIBERESP;
Instituto de Salud Carlos Ⅲ;
28029 Madrid;
Spain;
Giardia; Spain; Epidemiology; Human; Livestock; Pets; Water; Public; health; Transmission; Genotyping;